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Finding the Fourth Proportional to 323,760.60, 447,383.70 and 308,204.82

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Solution

The fourth proportional to 323,760.60, 447,383.70 and 308,204.82 is: 425,888.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,760.60 : 447,383.70 = 308,204.82 : x
  2. Step 2: Convert to fraction form
    323,760.60/447,383.70 = 308,204.82/x
  3. Step 3: Cross multiply
    323,760.60x = 447,383.70 × 308,204.82
  4. Step 4: Simplify right side
    323,760.60x = 137,885,812,729.43
  5. Step 5: Solve for x
    x = 137,885,812,729.43/323,760.60
  6. Step 6: Final answer
    x = 425,888.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.